Subsequent Events (Details)	1 Months Ended
Nov. 07, 2019 shares
Subsequent Events
Subsequent Event [Line Items]
Exercise of stock options (in shares)	20,000

Number of share options (or share units) exercised during the current period.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration